Steps to reproduce:

1. Set Overview Filters for Group and Application, data is missing for most (but not all hosts below the top one in the screenshot). Some are showing, some are not.
2. As an example, the first host with missing data, if I then add a filter for that one host, then the data shows fine. So data is present in the system, it just will not show in a larger list view.

Result:
See screenshot for before and after single host selection

Expected:
All hosts show data if data is present in the database.